Valve and valve-seat.



PATENTED MAR. 29, 1904.

s. R. PAINT-ER.

VALVE AND VALVE SEAT.

APPLICATION FILED SEPT. 12, 1903.

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UNITED ST TES fl: Patented March 29, 1904.

PATENT; O FICE.

VALVE AND VALVE-SEAT.

SPEGIF ICATIONforming part of Letters Patent No. 755,925, dated'March 29,1904. g

Applicationfile September12,1903. SeiialNo.17 3,020. 15, model.) I J To all whom it may concern/j Be it known that I, SIMEON R. PAINTER, a

citizen of the United States, residing at Terre thereon, which form part of this. specification.

My invention relates to that class of valves and valve-seats which are used in pumps, and particularly in that class of pumps used in pumping water from mines and other similar places where much soil and other foreign matter is found in the water to be pumped.

2o The objects of my invention ,are,first, 'to provide a valve and valve-seat whereby the capacity of a pump provided with the valve and seat will be .greatly increased over that afforded by other valvesand seats used prior 2 5 hereto, second, to provide a valve and "seat which will byits particular structure avoid the accumulation in the valveof'inud, coal,

' and other foreign substance which is so common in other forms of valves and seats; third,

to provide a valve and seat which by reason of its particular structure will be less subject to wear and other injury than other similar devices, and, fourth, to provide a valve which will have a maximum life under usage, which will be easily repaired, and which can be easily removed from the valve-plate of a pump. These objects I attain by means of the mechanism illustrated in the accompanying drawings, in which 1 Figure 1 is an elevation of the valve and valve-seat mounted in a section of the valveplate of a pump. Fig. 2 is a vertical crosssectional View of the valve and valve-seat. Fig. 3 is a plan view of the valve-seat.

Similar letters of reference refer tosimilar parts throughout the several views.

- The letter A indicates the valve-seat, which is constructed of brass or other suitable material and consists of a cylindrical shell a, two or 5 more ribs 6, said ribs beingcast integral with the internal lower edge of the shell a and radiating toward thecenter thereof and inclined downward to stud 0, which is cast/integral with the internal ends of said ribs 7), saidjstud being suspended from'the inner wall of -the 5 5 shell (4 by means of the ribs, with the, upper end of the stud below the lower edgeof the shell a, for the purpose hereinafterset forth. The outer wall of the shell is slightly beveled downward for the purpose of affording a cone 6. fit in the valve-plate d. A slight shoulder e is raised from the outerwall of afor the pur pose of affording a bearing upon' the valvef plated as an additional supportfor the valveseat The extre'me upper portion f of the 5v outer wall of the shell a is slightly beveled inward. The upper edge of the shell a is ground flat for the purposeof providing a single ani nular bearing-surface g, upon whichthe'valve rubberis seated. 'Theinner wallof the shell 7 9 a is cylindrical'and devoid of all projections or other obstacles except the ribs 6, which are pendentfrom the extreme lower portion of the inner wall for the purpose of affording an unobstructed passage for water, whereinv 7 5 foreign matter can find no lodgment.

A' guide-stem z' is mounted centrally upon the stud c and projects above the bearing-surface g of the valve-seat, for the purpose of guiding thehereinafter-described valve-stem. Theguidestem is provided with two or more grooves 1', extending perpendicularly throughout its length, for the purpose of affordingan escape for Water above the stem,thereby avoiding a cushion of water in the valve-stem. 5

The letter B indicates the valve, which consists of a flat rubber disk m, which is perforated at the center for the purpose of receiving the valve-stem and which fits down upon the bearing-surface g of the valve-seat, there- 9 by perfectly checking all flow of water through the valve-seat, and the spring-plate n, which consists of a flat circular plate somewhat smaller in diameter than the rubber valve m and concaved upon the upper face for the purpose of affording aseat for the spring 8 and the valve-stem t, which is integral with the springplate n and pendent from the center thereof. The valve-stem is cylindrical and hollow for the purpose of receiving the guide-stem i,

over which it fits. The valve-stem is threaded upon the outside for the purpose of receiving a flanged nut 0, which is threaded internally and is adapted when screwed upon the threads of the valve-stem to bind the rubber valve an firmly to the spring-plate n. A spiral spring 8 is mounted within the concaved upper face of the spring-plate n, and the upper end of the spring is confined by a stud M, which is pendent from the top of the water-chest, as shown by dotted lines in the drawings. In case two or more valves are utilized,one above the other, the top of the springs s belonging to the lower valves find bearings around the lower ends of the studs 0 of the valve-seat immediately above, the lower ends of the studs 0 being substituted for the stud u, used by the spring of the uppermost valve. The spring 5 holds the valve firmly down upon the seat when the valve is closed and compresses upon itself under pressure when the valve is opened.

The particular advantages of my valve and seat over similar devices used heretofore consists, first, in the single annular valve-seat which presents but one even bearing-surface devoid of all unequal points of contact and Wear, such as occur in valve-seats where the ribs and central stud are flush with the bearing-surface of the seat, thereby giving an even and smooth wear to the rubber valve; second, the ribs 7) and the studs 0 being pendent from the lower edge of the shell a they present less obstruction to the flow of water through the shell a, and hence such construction greatly increases the capacity of the valve in proportion to the size thereof over that of other valves; third, the peculiar propped or pendent structure of ribs 5 and stud 0 presents noobstacles whereon soil, coal, or other foreign substance may be deposited in such close proximity to the rubber valve on, thereby avoiding wearand tear upon the seat and rubber valve by such deposits, and also avoids clogging of the valve by large accumulations of foreign matter in the valve-seat, which commonly occurs in other forms of valves and valve-seats; fourth, the united action of the guide-stem and the valve-stem t afl'ords an I am aware that valves and valve-seats con- I sisting of rubber disks and annular metallic seats have been long in use, and I therefore make no broad claims upon such device; but whatI do consider as new and useful is the peculiar structure of the component parts of the device hereinbefore described and the objects attained thereby, and

What I claim as new, and desire to secure by Letters Patent, is

The combination, in a valve and valve-seat, of a shell a provided with a single annular bearing-surface g, pendent ribs 6 and stud c, said ribs and stud being below the shell a, and the grooved guide-stem a mounted upon the stud 0 and adapted to fit into the pendent valvestem 15 with the rubber valve on adapted to seat itself upon the single annular bearingsurface 9, the spring-plate n adapted to rest upon the rubber valve m and to support in its concaved upper face the spring .9, the hollow valve-stem t pendent from the spring-plate n and threaded upon its outer side for the purpose of supporting the threaded nut or clamp 0, the internallythreaded nut or clamp 0 adapted to screw upon the threads of the valvestem t and to clamp the rubber valve m against the spring-plate n, and the spiral spring 8 adapted to bear upon the spring-plate n and hold the valve in normal position, all substantially as described and for the purpose set forth.

In testimony that I claim the foregoing as my own I afiix my signature in the presence of two witnesses.

SIMEON R. PAINTER.

Witnesses: GEORGE M. DAVIS, SYD. B. DAVIS. 

